Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Construction
Class Information
Number: 175/415
Name: Boring or penetrating the earth > Bit or bit element > Impact or percussion type > Combined with rotary
Description: Apparatus in which the cutting edge is formed to disintegrate the formation as a result of simultaneous rotary and a forceful contact or a repetitive striking action.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8657040 Percussion drilling assembly and locking system therefor Feb. 25, 2014
8627903 Percussion assisted rotary earth bit and method of operating the same Jan. 14, 2014
8397839 Self-indexing down-the-hole drill Mar. 19, 2013
8393820 Rotationally locked drive assembly for a VSI crusher Mar. 12, 2013
8353369 Percussion assisted rotary earth bit and method of operating the same Jan. 15, 2013
8347988 Down-hole hammer drill Jan. 8, 2013
8286736 Drill bit, a drill rod and a self drilling roof bolt Oct. 16, 2012
8225889 Drill head for rock drills Jul. 24, 2012
8100200 Chuck assembly for a down-hole drill Jan. 24, 2012
8083010 Drilling device for drilling and reaming of a hole Dec. 27, 2011
8051927 Percussive drill bit for rock drilling and method for the manufacture of such a drill bit Nov. 8, 2011
7967083 Sensor for determining a position of a jack element Jun. 28, 2011
7913777 Rock drill Mar. 29, 2011
7900721 Hard metal plate for rock drill and rock drill Mar. 8, 2011
7891444 Drill bit Feb. 22, 2011
7882908 Drill Feb. 8, 2011
7861807 Drill bit including one piece cutting head Jan. 4, 2011
7849940 Drill bit having the ability to drill vertically and laterally Dec. 14, 2010
7744302 Cross-key rotational alignment locking device for VSI mineral breaker Jun. 29, 2010
7740088 Ultrasonic rotary-hammer drill Jun. 22, 2010
7740089 Drilling tool with a cutting element that is configured as a plate or head Jun. 22, 2010
7735584 Percussion hammer for enlarging drilled holes Jun. 15, 2010
7726419 Drill bit, system, and method for drilling a borehole in an earth formation Jun. 1, 2010
7661487 Downhole percussive tool with alternating pressure differentials Feb. 16, 2010
7641003 Downhole hammer assembly Jan. 5, 2010
7624824 Downhole hammer assembly Dec. 1, 2009
7614464 Rock drill machine Nov. 10, 2009
7607498 Assembly and method for discharging fluid into a drill string of a rotary-vibratory drill Oct. 27, 2009
7575074 Drilling head for an anchor Aug. 18, 2009
7559383 Hard material drilling head Jul. 14, 2009
7559382 Hard material head and rotary percussion drill bit Jul. 14, 2009
7549491 Hard material bit Jun. 23, 2009
7546888 Percussive drill bit Jun. 16, 2009
7527110 Percussive drill bit May. 5, 2009
7497282 Drill bit having radially extending cutting bits on radial legs Mar. 3, 2009
7461706 Drilling apparatus with percussive action cutter Dec. 9, 2008
7455126 Percussive drill bit, drilling system comprising such a drill bit and method of drilling a bore hole Nov. 25, 2008
7441611 Pneumatic rock drill Oct. 28, 2008
7428938 Percussion bit drill drive collar with retention mechanism and method of assembling Sep. 30, 2008
7419016 Bi-center drill bit Sep. 2, 2008
7419017 Multi-sectional percussive drill bit assembly Sep. 2, 2008
7410013 Boring and drilling apparatus Aug. 12, 2008
7401667 Multi-purpose drilling tool Jul. 22, 2008
7395883 Keyed connection for drill bit Jul. 8, 2008
7389833 Multi-sectional percussive drill bit assembly Jun. 24, 2008
7314102 Percussion or hammer drill Jan. 1, 2008
7290624 Method and device for drilling holes in soil or rock material Nov. 6, 2007
7261169 Shank for a rotary/percussion tool Aug. 28, 2007
7258180 Rotary hammerdrill bit Aug. 21, 2007
7255182 Ground drilling tool Aug. 14, 2007

1 2 3 4










 
 
  Recently Added Patents
Memory with separate read and write paths
Estrogen receptor ligands
In-store marketing sign
Level shifter and method of using the same
Synthesizing VHDL multiple wait FSMS into RT level FSMS by preprocessing
Drive apparatus
Para-xylylene based microfilm elution devices
  Randomly Featured Patents
Measuring arrangement in an injection-moulding system
Video display on spectacle-like frame
Flange mounted thermostatic expansion valve
Lithography for printing constant line width features
Projection display system for viewing displayed imagery over a wide field of view
Herbicidal and plant growth regulant compositions and their use
Seal for a sensor element of a gas sensor and method for producing said seal
System and method for streetlight monitoring diagnostics
Gain control circuit
Motor control device